There's a lot of flashing lights on the top of police cars, most meaning you're about to get some kind of ticket, but yellow lights are the exception.

We’ve all been there, the traffic light turns from green to yellow and you’ve got a split second to decide whether to hit the brakes hard or step on it and blast through before it's red.

The team did tests on mice, fixing the brightness to high or low and switching the colour from blue to yellow. Bright light of either colour was stimulating, rather than restful, as expected.

Ariana Grande is following the yellow brick road all the way back to the 1960s archives of Paris. Tonight at the 2025 Golden ...